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This model is chambered for 300 Blackout. You'd think that'd be mentioned on the items listing page?!?

Hi Juan and welcome. This upc/Rifle is chambered in 300BLK. Complete Specifications here: CMMG Resolute MK4 Specifications Brand: CMMG Model: Resolute MK4 Caliber: 300 Blackout Gun Platform: AR-Style Operating System: Direct Impingement Capacity: 30+1 Stock Material: Synthetic Action: Semi-Auto Overall Length: 30.90" Sights: None Barrel Finish: Black Nitride Barrel Material: Chrome Moly Steel Muzzle: CMMG Zeroed Muzzle Brake Twist: 1:7" Receiver Description: Picatinny Rail Grips: CMMG Zeroed Handguards: EML 15" M-LOK Includes: Magazine Receiver Material: Aluminum Safety: CMMG Zeroed 60/90 Degree Thread Pattern: 5/8"x24 Stock Description: CMMG 6 Position RipStock Barrel Description: Medium Taper Threaded Barrel Length: 14.50" Max Capacity: 30 Receiver Finish: Coyote Tan Cerakote Trigger: Zeroed Drop-In Single Stage Weight: 6 lbs Stock Finish: Coyote Tan Handguard Finish: Coyote Tan Cerakote ------ Cheers and stay safe!